EFFECT OF REFUSE-DERIVED FUEL FEEDING RATIO ON PERFORMANCE AND STABILITY OF COMBUSTION TEMPERATURE CONTROL

Abstract

In this study, the effect of Refuse-Derived Fuel type 3 (RDF-3) feeding ratio on a performance and a stability of combustion temperature control was exmined. A new direct-combustion furnace was designed and constructed for co-combustion of RDF-3 and woodchip (WC) feedstock. In this work, four main ratios on wet basis of WC and RDF-3; 100 : 0, 90 : 10, 80 : 20, and 70 : 30 wt.% were tested at the combustion temperature of 970°C. The results showed that the complete combustion was achieved from all of feeding ratios. From an actual fuel feed rate, an increase in RDF mixing ratio could reduce the using of pure woodchip by 5.3 wt.%, 14.3 wt.% and 34.0 wt.% when mixing the RDF at 10 wt.%, 20 wt.% and 30 wt.%, respectively. At increasing of RDF mixing ratio, non-smoothy burning was also found to increase, however, a more rapid ignition behavior of was achieved